great exposure. looks like you used a closeup lens with the extremely shallow depth of field. it probably would be more effective if you had focused on the rim of the glass as that is what carries the most detail in the shot.
I like the simplicity of this. A little more DOF to get the lip in focus would have been good, if you couldn't get any more DOF then focusing higher up the bottle. with this angle, the lip really needed to be in focus. Great lighting.
Nice composition and use of non-distracting background. I'd like to see the focus shifted more to the mouth of the bottle, perhaps. I like the little drops that appear to be some sort of condensation on the bottle itself, they add a texture and interest to the shot. So maybe just a bit tighter on the aperature to bring the whole thing into sharp focus? Just a thought...
THe focus look a bit off here. The angle of the bottle seems a bit odd too, the right side is pretty much even with teh right border, but the left side is on such a slant. The lighting seems nice, adn the contrast is good as well.